HDX18T Monitor Goes Black

For the past week or so, I've had to move the power plug around to get the laptop to charge. I determined that it's not the cable, but is the internal part. Today, when I opened the lid to bring the laptop out of sleep mode, my desktop displayed for a second or two, and then went blank. I've re-started several times, removed the battery and held the power button, but it doesn't help. Originally, it would go blank as soon as Windows started to load, so I tried Safe Mode, with the same result. Now, when I turn on the laptop, I might see the HP logo and/or the blinking cursor, and then the screen goes black.
I hooked it up to an external monitor, which worked, until I tried to uninstall the display driver, in hopes that it would correct itself, now I don't get anything on the external monitor either.
I suspect that it must be the graphics card, but not sure. One other thing that happened occasionally, if I bumped the side of the laptop, near the HDMI and USB ports on the left side of the laptop, against something metal, the screen would go black for a split second. Seemed like an electric short.
Thank you for any help you can provide. I'm okay with replacing parts, although not my favorite. I did replace the keyboard with the lighted keyboard a  year ago.

That's too bad that the lamps are gone, but here are some alternatives.
 The new screen is probably the best way to go, but removing it from the bezel is a challenge, after the hinges are removed, the screen is still held in there with this double sides sticky tape. If you use a very hot hair drier, starting at one of the upper corners, the adhesive can be softened enough to begin prying the bezel away from the screen. It takes awhile for the hair dryer to soften the adhesive so give yourself lots of time for this procedure.
 When the new screen is installed it's very difficult to get every last crumb of debris out from under the bezel, so keep this in mind.
 Another option is to replace the bulbs, I tried this ounce on an old screen that I didn't care about and it did not go well. I could not separate the parts that were taped together without damaging them. This would be the least expensive way to go if you can remove the bulbs.
 I am also assuming that it's the 1920 X 1080 screen with the dual lamp arrangement _ some of them used screen with lower resolution with one CCFL lamp. (Yours is probably the dual lamp assembly) 
 There is also a used complete screen assembly available on e-bay, but eventually it may succumb to you fate in a few days or a few years, there is no way of knowing.
 The part number for the complete display assembly is 498166-001 and it is available from HP, but it's expensive.
 The other thing that I have not mentioned is that it may a faulty cable, perhaps the wires that supply the voltage to the inverter board have become internally frayed. This is a common occurrence, but usually this also effects the picture as well.
 Here is the part number for the cable 496876-001. These can be found on e-bay and some of them are new.

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